Lettering guide having double clip

ABSTRACT

A lettering guide having a double clip member attached to the base thereof adapted to hold a tinted transparent window card and an image-producing card in fixed angular relationship with each other, so that lettering guide lines are reflected from the image-producing member onto a drawing surface to avoid the necessity of penciling in, and later erasing, lettering guide lines. The clip comprises a rigid inner member having two mutually opposing arms disposed at a predetermined acute angle with respect to each other, and a second outer clamping member having a pair of arms of flexible, resilient construction with a configuration paralleling that of the inner member. The two pair of arms form a cooperating pair of apertures in fixed angular relationship with each other for holding a transparent window card and an image-producing card.

United States Patent 1191 Hoggan [11] 3,819,251 June 25, 1974 LETTERINGGUIDE HAVING DOUBLE CLIP [76] Inventor: Daniel H. Hoggan, 955 FoothillDr.,

Providence, Utah 84332 [22] Filed: July 25, 1972 [21] Appl. N0.: 275,088

[52] US. Cl 350/121, 24/81 PC, 350/174 [51] Int. Cl. G02b 27/02 [58]Field of Search 350/121, 174; 24/81 PC, 24/81 PH [5 6] References CitedUNITED STATES PATENTS 1,420,491 6/1922 Morse....i 350/174 2,443,2166/1948 Larsen 24/81 PC 2,824,590 2/1958 Anderson... 24/8l PC 3,291,55212/1966 Hoggan 350/174 FOREIGN PATENTS OR APPLICATIONS 649,237 1/1951Great Britain 24/81 PC 56,832 10/1952 France 24/81 PC PrimaryExaminer-Samuel S. Matthews Assistant ExaminerE. M. OConnor Attorney,Agent, or Firm-Kay S. Cornaby 5 7] ABSTRACT A lettering guide having adouble clip member attached to the base thereof adapted to hold a tintedtransparent window card and an-image-producing card in fixed angularrelationship with each other. so that lettering guide lines arereflected from the imageproducing member onto a drawing surface to avoidthe necessity of penciling in, and later erasing, lettering guide lines.The clip comprises a rigid inner memher having two mutually opposingarms disposed at a predetermined acute angle with respect to each other,and a second outer clamping member having a pair of arms of flexible,resilient construction with a configuration paralleling that of theinner member. The two pair of arms form a cooperating pair of aperturesin fixed angular relationship with each other for holding a transparentwindow card and an image-producing card.

5 Claims, 10 Drawing Figures LETTERING GUIDE HAVING DOUBLE CLIP Thisinvention is an improvement over the device described in U.S. Pat. No.3,291,552, issued Dec. 3, l966.

A primary object of this invention is the provision of an improveddouble clip device which is sturdy and durable in construction, reliableand efficient in operation, and relatively simple and inexpensive tomanufacture, assemble, utilize and maintain.

Another object of the instant invention is to provide a double clipdevice which, because of the designed flexibility and spring action ofthe outer clamping member of the device, will accommodate imageproducing cards and tinted windows of varying thickness thus avoidingproblems of obtaining suitable fit when manufacturing tolerances on thethicknesses of the image producing cards and tinted windows-are toogreat for these partsto fit properly in fixed slots.

A furtherobject of the instant invention is the provision of oneembodiment of adouble clip device which is composed of two parts anouter clamping partand an inner rigid part bolted together.

Another object of this invention is the provision'of one embodiment of adouble clip device which is formed by cutting and bending one singlepart.

Other and further objects reside in the combination of elements,arrangement of parts and features of construction.

Still other objects will in part be obvious and in part be pointed outas the description of the invention proceeds and as shown in theaccompanying drawings wherein:

FIG. 1 is a top plan view of one embodiment of the device of the instantinvention as it would be attached to and a part of a lettering guidedevice associated with a conventional drawing machine, with parts brokenaway for illustrative clarity and convenience.

FIG. 2 is a side elevational view of the embodiment of FIG. 1 showingschematically the manner in which a draftsman or the like would utilizethe device of the instant invention, with parts broken away forillustrative convenience.

FIG. 3 is a fragmentary sectional view taken on line 33 of FIG. 2looking in the direction of the arrows, showing the device of the.instant invention associated with the tinted window of the letteringguide device and showing the manner of adjusting the tinted window to,

FIG. 5 is a side elevational view of the device of the instant inventionand associated base of the lettering guide device shown in FIG. 4.

FIG. 6 is a transverse cross sectional view taken on line 6-6 of FIG. 4looking in the direction of the arrows.

FIG. 7 is a top plan view of another embodiment of the double clipdevice of the instant invention associated with the base 32 of thelettering guide device.

FIG. 8 is a side elevational view of the embodiment of FIG. 7 with partsof the associated base 32 of the lettering guide device broken away.

FIG. 9 is a transverse cross-sectional view taken on line 9-9 of FIG. 8looking in the direction of the arrows.

FIG. 10 is an end elevational view of the embodiment and associated baseof FIG. 7.

Referring now to the drawings in general and more particularly to FIGS.1 and 2, one embodiment of the double clip device of the instantinvention is indicated generally by the reference numeral 11. It isshown as part of a lettering guide device (indicated generally byreference numeral 10), which in turn is associated with a conventionaldrafting machine (indicated generally by reference numeral 12). Thelettering guide device 10 and the drafting machine 12 are not parts ofthe instant invention except insofar as they cooperate with the doubleclip device 11. A knob 14 is provided on the drafting machine 12 and isused by the draftsman to move the machine in any direction as indicatedby the arcuate arrows while maintaining a chuck means 16 in a constantposition with relation to the drafting table 18 and drawing paper 20.Normally the chuck means 16 is maintained square with relationship tothe edges (not shown) of the drawing paper 20 in order that ahorizontally extending arm (not shown) secured to the chuck means 16 maybe used for drawing horizontal lines while the vertically extending arm22 is used for vertical lines.

'A conventional locking means 24 is secured to the lettering guidedevice 10 to cooperate with the chuck means 16 in order to removablylock the lettering guide device 10 to the drafting machine 12 foroperation in association therewith.

The preferred embodiment of the double clip device 11 as shown in FIGS.1-6 comprises essentially an inner rigid member 13 and an outer clampingmember 17.

The inner rigid member 13 and the outer clamping member 17 are fastenedsecurely with conventional bolts 19 to the associated base 32 of thelettering guide device 11. Fastened in position, the inner member 13 andthe outer member 17 form a double clip which supports essentialassociated parts of the lettering guide device a tinted window 28 and animage producing card 30. The inner rigid member 13 is stiff andinflexible and holds precisely the associated tinted window 28 and theassociated image producing card 30 in predetermined fixed angularpositions with respect to each other and the drawing surface 20 so thatthe letter guide device functions properly. The tinted window is held inan upward extending direction at a first angle with respect to saiddrawing surface and the image producing card is held in an upwardextending direction at a second angle with respect to said tintedwindow, said first and second angles being substantially equal. Theouter clamping member 17 is designed to have flexible, resilient actionso as to accommodate cards and windows of different thicknesses and tohold each one securely against the inner rigid member 13. The innerrigid member 13 may be of any desired material so long as it can beformed into the correct angular configuration and be rigid enough tohold the correct configuration in use. Thin stainless steel sheet hasbeen found useful. The outer clamping member 17 may be of the samematerial as the inner rigid member 13 or of different material so longas it provides the flexibility and resilience necessary. Stainless steelsheet also has been found useful for this member.

It will be noted that the space 21 between the inner rigid member 13 andthe outer clamping member 17 is open on both ends. This enables theassociated tinted window 28 to be angularly adjusted in the manner shownby the arcuate arrow in FIG. '3 to allow the draftsman to position thesame to be most convenient and comfortable to him.

The use and operation of the double clip device 11 of the instantinvention in conjunction with associated parts of the lettering guidedevice should now be apparent. The draftsman merely places the bottomportion of the tinted window 28 and the bottom portion of the imageproducing card 30 in their respective openings 21 in the double clipdevice and secures the associated base 32 of the lettering guide deviceto the chuck means 16 of the drafting machine 12 by inserting thelocking means 24 therein in the conventional manner. The tinted windowmember 28 may be angularly adjusted as shown in FIG. 3 and thedraftsman, indicated schematically by the eye shown at 54 in FIG. 2, mayproceed to print whatever letters are desired, such as the John Doe &Company shown at 56 in FIG. 1 by means of the pencil 58 shown in FIG. 2.The guide lines 46 are reflected through the tinted window 28 from theimage producing card 30.

The embodiment of FIGS. 7-10 is substantially the same so far as itsutility is concerned as the embodiment of FIGS. l6. In this embodimentthe double clip is formed in one piece. Outer clamping members 34 arepartially cut and separated from the same piece that forms the innerrigid members 35. The outer clamping members 34 are shaped so as toprovide flexibility and spring action. The number and size of the outerclamping members may vary as desired so long as the clamping actionrequired is produced. The inner rigid members 35 are formed with flatsurfaces positioned at the correct angles for the lettering guide deviceto function properly.

It is now clear that there is herein provided a double clip device whichsatisfies all of the objectives of the instant invention and others,including many advantages of great practical utility and commercialimportance.

Since many embodiments may be made of this inventive concept and sincemany modifications may be made in the embodiments hereinbefore shown anddescribed, it is to be understood that all matter herein is to beinterpreted merely as illustrative and not in a limiting sense.

I claim:

1. A lettering guide having a double clip for holding a window card andan image-producing card, comprising in combination:

a base member;

a rigid inner clip member having a pair of arms disposed at apredetermined acute angle with respect to each other, said inner memberbeing attached to the base member; and

a flexible, resilient outer clip member having a pair of arms biasedtoward said arms of said inner clip member, so as to be disposed at saidpredetermined acute angle with respect to each other, said outer memberbeing attached to the base so that the pair of arms of the outer memberform a cooperating pair of slots with the corresponding ms of the innermember, said slots adapted to hold respectively a transparent windowcard and an imageproducing card.

2. A lettering guide as set forth in claim 1, wherein the inner andouter members are bolted together to the base.

3. A lettering guide as set forth in claim 1, wherein the acute angle isapproximately 60 degrees.

4. A lettering guide as set forth in claim I, wherein the respectivearms of the outer and inner members are of unitary construction.

5. A lettering guide as set forth in claim 5, wherein the respectivearms of the outer member are partially cut and separated from thecorresponding arms of the inner member.

1. A lettering guide having a double clip for holding a window card andan image-producing card, comprising in combination: a base member; arigid inner clip member having a pair of arms disposed at apredetermined acute angle with respect to each other, said inner memberbeing attached to the base member; and a flexible, resilient outer clipmember having a pair of arms biased toward said arms of said inner clipmember, so as to be disposed at said predetermined acute angle withrespect to each other, said outer member being attached to the base sothat the pair of arms of the outer member form a cooperating pair ofslots with the corresponding arms of the inner member, said slotsadapted to hold respectively a transparent window card and animage-producing card.
 2. A lettering guide as set forth in claim 1,wherein the inner and outer members are bolted together to the base. 3.A lettering guide as set forth in claim 1, wherein the acute angle isapproximately 60 degrees.
 4. A lettering guide as set forth in claim 1,wherein the respective arms of the outer and inner members are ofunitary construction.
 5. A lettering guide as set forth in claim 5,wherein the respective arms of the outer member are partially cut andseparated from the corresponding arms of the inner member.